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South Australia · Postcode 5169
Seaford Heights postcode and suburb data
South Australia · Phone area code 08 · 31 km from Adelaide
Suburb snapshot
Seaford Heights at a glance vs SA
Fast facts and benchmark bars show the suburb's key postcode, Census, SEIFA, school and LGA signals in context.
Quick facts
Benchmarks against SA
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
Where Seaford Heights ranks: household income is in the top 25% of SA suburbs; rents are among the top 10% in SA.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Seaford Heights vs the SA average and the national average, using population-weighted 2021 Census data.
| Metric | Seaford Heights | SA avg | AU avg | Greater Adelaide |
|---|---|---|---|---|
| Household income/wk | $2,170 +SA | $1,545 | $1,836 | $1,620 |
| Rent/wk | $380 +SA | $308 | $390 | $329 |
| Mortgage/month | $1,733 +SA | $1,558 | $1,958 | $1,666 |
| Median age | 29 | 45.0 | 45.0 | 42.0 |
| SEIFA decile | 8/10 +SA | 5.0/10 | 6.0/10 | 7.0/10 |
| Unemployment | 2.3% -SA | 6.0% | 5.0% | 6.0% |
Green pill = at least 10% above the SA average; red = at least 10% below; grey = within 10%. For unemployment, colour polarity is inverted: lower is better.
Postcode 5169 covers Seaford Heights, an inland suburb of Adelaide about 31 km from the city centre. It forms part of the Adelaide - South region of South Australia. Local government services are provided by Onkaparinga.
According to the 2021 Census, Seaford Heights has a population of 1,079 with a median age of 29. The median weekly household income is $2,170, above the SA average. The unemployment rate is 2.3%, lower than the SA average. The Indigenous population is 24 (2.2% of residents).
Housing in Seaford Heights includes a median weekly rent of $380, median monthly mortgage repayment of $1,733, with 398 total dwellings. These housing costs sit above the SA average. Owner-occupied dwellings (owned or mortgaged) make up 77.1% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Seaford Heights scores in decile 8 out of 10, which is above the national average.
Seaford Heights is part of the Onkaparinga statistical area in South Australia.
Seaford Heights details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 5169 |
| State | South Australia (SA) |
| Phone Area Code | 08 |
| Population (2021) | 1,079 |
| Median Age | 29 years |
| Median Household Income (Census 2021) | $2,170/week |
| Median Personal Income (Census 2021) | $1,081/week |
| Median Weekly Rent (Census 2021) | $380 |
| Median Monthly Mortgage (Census 2021) | $1,733 |
| Average Household Size | 2.6 persons |
| Area | 1.7 km² |
| Population Density | 623/km² |
| Total Dwellings | 398 |
| Australian Citizens | 89.2% |
| Indigenous Population | 24 (2.2%) |
| Unemployment Rate | 2.3% |
| SEIFA IRSAD Decile | 8/10 (above average) |
| Latitude | -35.1979097 |
| Longitude | 138.496455 |
| Distance from Adelaide | 31 km |
| Region (SA4) | Adelaide - South |
| Area (SA3) | Onkaparinga |
| Local Government | Onkaparinga |
| Federal Electorate | Kingston |
| State Electorate | Kaurna |
| Time Zone | ACST (UTC+9:30), Australia/Adelaide (standard time) |
Age Profile
Show counts
| 0–14 years | 254 (23.5%) |
| 15–24 years | 118 (10.9%) |
| 25–44 years | 485 (44.9%) |
| 45–64 years | 169 (15.7%) |
| 65+ years | 51 (4.7%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Asthma | 87 (8.1%) |
| Arthritis | 34 (3.2%) |
| Diabetes | 22 (2.0%) |
| Heart Disease | 16 (1.5%) |
| Cancer | 8 (0.7%) |
| Lung Condition | 7 (0.6%) |
| Dementia | 4 (0.4%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 4 (1.0%) |
| 1 vehicle | 113 (28.8%) |
| 2 vehicles | 220 (56.0%) |
| 3+ vehicles | 56 (14.2%) |
Suburbs Near Seaford Heights
Same Postcode (5169)
More Seaford Heights Data
Page last reviewed . Data sources: Australian Bureau of Statistics 2021 Census (CC BY 4.0), SEIFA 2021 IRSAD, ACARA school profiles 2025. How this data is sourced.